Here's a tentative patch set for transitioning the non_rotational,
discard and secure discard queue flags to the topology information.
The first patch introduces a new function for setting the default limits
for stacking drivers like we discussed a few weeks ago. Wrt. to naming
I felt it was best to have a function that said "stacking". That's why
I introduced a new call instead of using blk_set_default_limits() even
though that function was originally motivated by device mapper.
The last two patches deal with non-rotational and the discard flags
respectively.
Let me know what you guys think...
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Martin K. Petersen Oracle Linux Engineering